Street-car-door-locking device.



E. L. JAMES.

STREET CAR DOOR LOCKING DEVICE,

APPLICATJON FILED AUG-8. 1911.

.L@6%,1WY Patented! Apr. 30, 1918.

A marrnn stares narnnr enrich,

nLLior'r L. JAMES, or Lovvnnnsnono, ALABAMA.

s'rnnnr c.an-noon-Loc-Kme nnvrcn.

Application filed. August a, 1917. Serial no. 185,091.

T0 all whom it mag macaw;

Be it known that T, ELLIOTT L. JAMES, a citizen of the United States, residing at Lowndesboro, in the county of Lowndes' and State of Alabama, have invented certain new and useful Improvements in Street-Car- Door-Locking Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvementsin a street car door locking device and has for one of its objects the provision of a device of this Character, whereby the door will be held frombeing opened while the car is in motion or traveling and Which will auto matically release the door when the car comes to a stop, thus obviating the danger of the door being opened while the'car is in motion or traveling. a

Another object of this invention is the provision of a catch located adjacent the door and adapted to be moved into engagement with the door while the car is in motion and to be automatically moved from engagement with the door when the car stops. a A further object of this invention 'is the provision of means for moving the. catch into engagement with the door and hold the same in this positionwhile thecar is in mo-. tion, and which will automatically move the catch from engagement with the door when the car comes to a stop.

A still further object of this invention is the provision of a street car door operating 7 device of the above stated character, which shall be simple, durable and efiicient, and

whichmay be manufactured and sold at: a

comparatively low cost. V

With these and other objects in view as will become more apparent as the description proceeds, the invention consistsin cer tain novel features of construction, combination :and arrangement of parts as will be hereinafter more fully described. and claimed. 7 a

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawings, in which: i

Figure 1 isa longitudinal sectional view of a street car door locking device construct ed in accordance with my lnventlon,

Fig. 2 is a transverse sectional view of the same. p a p Referring in detail to the drawings, the numeral .1 indicates flooring of a street car or the like and 2 represents the door to the car, which is of the swinging type.

The flooringl of the car adjacent its forward endis provided with a slot 8 for the purpose of receiving a lever 45, which is pivoted to theflooring 1 of the car as at 5. t The lever 4: has pivoted to its upper end, an arm 6, which is normally supported in a sub stantially horizontal position'by its pivot and adaptedito be moved into and outlet engagement with the door 2 as illustrated in full and dotted lines in Fig. 1. A suit able guide? is secured to the free end of the arm 6 and is adapted to'engage the flooring l for the purpose of aiding in S1113- porting the arm in a substantially horizontal positionso that the same will eiiiciently hold the door in closed position. a

Hangers 8 are secured to the floor 1 of the car and have slidably mounted therein, anoperating rod 9, Whichis pivoted to the lower end of the lever a as at 10, A cylinder 11 is supported to the fiooring l of the car by hangers 12 and is provided with an elongated slot litter receiving a barlt, which is pivoted to the free end of the operating rod 9. The cylinder 11 has one end thereof closed by a head 15 and also has slidably mounted therein, a piston 16. The piston 16 is provided with the usual piston rod 17, which is secured to the bar 1 1. Sup porting brackets 18 are secured within the cylinder 11 i and slidably support a cylindrical member 19. The cylindrical member 19 has formed thereon, a rib 20, which slides in the grooves in the brackets 18 for pre venting the cylindrical member 19 from rotating in said brackets. The cylindrical member 19 has one end closed by a wall'Ql, which is provided with an indentation 21 for the purpose of receiving the free end of the piston rod ;17. The innerwallofjthe cylindrical member 19 for a short distance is provided with screwthr'eads 22,, which mesh with screwthreads 23 uponla. shaft 2 1i The shaft 241 "constitutes the armature shaft of a motor 25, which is supported to the so that when the driving motor of the car is started in operation, the motor 25 will be also started, causing the screWthreads 23 to move the cylindrical member 19 forwardly to occupy a position as shown in dotted lines in Fig. 1. As the cylindrical member 1 9 mo ves forwardly, the piston 16 is moved forwardly into a dotted line position compressing air within the cylinder 11. As the piston 16 moves forwardly, the arm 4 is rocked upon its pivot to cause the arm 6 to engage the door 2 and hold the same in a closed position. As the cylindrical member 19 moves into a position as shown in dotted lines, the screwthreads 22 disengage from the screwthreads 23 preventing fur ther movement of the cylindrical member and piston 16. l/Vhen the driving motor not shown) of the car is stopped by the usual controlling means, the motor 25 is stopped and the compressed air within the cylinder 11 forces the piston 16 rearwardly, moving the cylindrical member 19 rearwardly, which rotatesthe shaft 24 in a re verse direction from the direction heretofore described, positioning the device ready to again be moved forwardly. As the cylindrical member 19 moves rearwardly under the influence of the piston 16, the arm 4 is rocked upon its pivot, causing the arm 6 to move from engagement with the door 2 so that the 'door may be readily opened. 7

From the foregoing description tal'ren in connection with theaccomp'anying drawings, it will. be noted that a means has been provided whereby the'door 2 will be held in a closed position as long as the car is in motion and which'will be automatically released when the car stops. 7

W Vhile I have shown and described the preferred embodiment of my invention, it will be understood that minor changes in construction, combination and arrangement of parts may be made without departing from the spirit and scope of the invention as claimed. p i

Having thus described my invention, what I claim is:

1. The combination with a car including a 'fioor and a swinging door, of a catch pivoted to the flooring, a cylinder carried by the flooring, a piston in said cylinder, means for connecting the piston to the catcln'and means for moving said piston forwardly to compressthe air within said cylinder and simultaneously moving the catch into engagement with the door, and means for permitting the piston to move rearwardly under the influence of the compressed air within the cylinder to disengage the catch from the door of the car when the same has stopped.

2. The combination with a car including a flooring and a swinging door, of a, catch pivoted to the flooring, a cylinder carried by said flooring, a piston slidable in said cylinder, a cylindrical member slidably mounted Within the cylinder, means connecting the piston with the catch, and means for moving the cylindrical member forwardly to cause the piston to compress air within the cylinder and simultaneously mo \e the catch into engagement with the door, and means for permitting the cylindrical member to move rcarwardly under the influence of the compressed air within the cylinder and simultaneously disengage the catch from the door when the car is stopped.

3. The combination with a. car including a flooring and a swinging door, of a catch pivoted to the flooring, a cylinder carried by said flooring, a piston in said cylinder, means connecting the piston with the catch, a cylindrical member slidably mounted within the cylinder, screwthreads formed within the cylindrical member, a motor cured to the flooring, an armature shaft for said motor and disposed within the cylindrical member, screwthreads upon said shaft and adapted to mesh with the screw threads of the cylindrical member for forcing said cylindrical member forwardly, causing the piston to compress air within the cylinder and simultaneously move the catch into ongagement with the door, and said screwthreads adapted to disengage each other upon the cylindrical member reaching its forward position to hold the catch in engagement with the door as long as the motor is rotating, and said piston is adapted to move rearwardly under the influence of the compressed air when the motor has stopped to disengage the catch from the door.

4. A car door locking device comprising a catch associated with a door, a cylinder, a piston in said cylinder and connected to the catch, a slidable means in said cylinder adapted to actuate the piston to more the catch in one direction to lock the door and compress air within the cylinder, and means actuating said sliding member.

In testimony whereof I aflix my signature in presence of two witnesses.

ELLIOTT L. Jim IRS.

Witnesses:

W. K. BOGGAN, R. E. LITTLE, Jr.

Ccpies of thispatent may be obtained for fiVfCOiltS each, by addressing" the Commissioner of Patents,

Washington, I). c." 

